Duct assembly



FIG. 1 is a front elevation of the duct assembly of Applicant's invention.

FIG. 2 is a right side elevation of the duct assembly of Applicant's invention, the left side being a mirror image thereof.

FIG. 3 is a top view of the duct assembly of Applicant's invention; and,

FIG. 4 is a bottom view of the duct assembly of Applicant's invention.

There is no rear view shown, the same being unornamented and not visible in normal use of the invention.

The dashed lines are provided to show surrounding background and are not a part of the design. 

What is claimed is the ornamental design for a duct assembly, as shown and described. 